CN1247501A - Structural ply of paperboard core, paperboard core made thereof, and method of improving stiffness of paperboard core - Google Patents
Structural ply of paperboard core, paperboard core made thereof, and method of improving stiffness of paperboard core Download PDFInfo
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- CN1247501A CN1247501A CN98802523A CN98802523A CN1247501A CN 1247501 A CN1247501 A CN 1247501A CN 98802523 A CN98802523 A CN 98802523A CN 98802523 A CN98802523 A CN 98802523A CN 1247501 A CN1247501 A CN 1247501A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/04—Kinds or types
- B65H75/08—Kinds or types of circular or polygonal cross-section
- B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31C3/00—Making tubes or pipes by feeding obliquely to the winding mandrel centre line
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/906—Roll or coil
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1303—Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
- Y10T428/1317—Multilayer [continuous layer]
Abstract
The present invention relates to a structural ply of a spiral paperboard ply, the cross machine direction (CD) elasticity modulus E of the structural ply being substantially higher than 4500 MPa. Further, the machine direction (MD) elasticity modulus E of the structural ply is substantially higher than 7500 MPa (N/mm<2>). The invention also relates to a spiral core comprising such a structural ply. The present invention further relates to a method of improving the stiffness of a spiral paperboard core. Paperboard cores in accordance with the invention may be manufactured by using, either solely or partly, structural plies according to the invention, the paperboard for making up such structural plies having been manufactured, e.g., with a method called press drying. Paperboard based on the press drying method can be manufactured, e.g., with a board machine employing a so-called Condebelt process. The invention also relates to use of such cores as yarn carriers and as tubes for thin films and foils.
Description
The present invention relates to Structural layer according to the cardboard core of claim 1 preamble.The invention still further relates to the helix core that comprises this Structural layer.And, the invention still further relates to the method for improving the spiral stiffness of paperboard core.
The spiral cardboard core is to be made of by reel, bonding and drying etc. the ply of board of many stacks.
The rolling product (WEBS) of paper industry, film industry and textile production is wound on the core usually to roll.The core, particularly helix core made with cardboard are by one of ply of board is bonded on another and on special screw machine its screw winding to be made.Width, thickness and the quantity of the needed ply of board of formation core changes according to the size and the requirement of strength of the core that will make.Usually, layer width is 50 to 250 millimeters (being about 500 millimeters under special circumstances), and layer thickness is about 0.2 to 1.2 millimeter, and the quantity of layer was about for 3 to 30 (being about 50 under special circumstances).The Strength Changes of ply of board is to meet the requirement of strength of core.Usually, the intensity of increase ply of board also increases its cost.Usually, say that core is strong more, then core is expensive more is correct.
The paper roll that printer is used is formed on the coiling core.This coiling core nearly all is the cardboard core of screw winding.In efficient printer, when finishing, produced the so-called volume that flies and changed (flying reel change) near debatching, that is, the paper in reel that new paper roll is used is connected similar by on the paper in reel of debatching at full speed.Enough firm and hard core is to make to fly to roll up the very The key factor of changing successfully.
Printer uses the core of two kinds of sizes usually.The internal diameter of the most frequently used core size is 76 millimeters, and wall thickness is 13 or 15 millimeters.The internal diameter of the core that now wide and the fastest printer uses is 150 millimeters, and wall thickness is 13 millimeters.When changing paper roll, the minimum thickness of paper is about 3 to 8 millimeters on the core.If the rigidity of core is not enough, then on core, must leave more paper.The cardboard core of using on the printer is the general core of paper-making industry, that is, they are thick-wall, and wall thickness H is 10 millimeters or thicker, and the internal diameter of core is greater than 70 millimeters.The core that paper-making industry is used must be thick-wall, that is, wall thickness must be about 10 millimeters or thicker, for example, forms clamping so that it can be clamped and make it possible to by chuck (chuck opens) between wicking surface and anvil roll, with the coiling paper roll.Particularly, the structure of cutting up-coiler requires core to have enough wall thickness, and wall thickness is actually 10 millimeters or more.Usually, if coiling/debatching speed is used this paper-making industry core when being at least about 200 meters/minute (=3.3 meter per second).
In actual environment, if change to reduce the web velocity of printer for paper roll, and when debatching the size of paper roll, that is, the diameter of paper roll diminishes, the speed of the paper roll that then diminishes gradually can be increased to quite high speed.
Present trend is more and more wideer He more and more faster printer.Be transformed into wide printer, that is, those have the printer of long core and high running velocity, may cause remaining paper roll, i.e. cardboard core+in paper roll replacing process, will enter its natural vibration scope at the paper in reel that stays on the cardboard core, thus shake.This can cause expensive web breakage, even can cause remaining paper roll to burst fragmentating, thereby produces serious security risk.
This situation is common to wide and fast rotogravure press.Rotogravure is mode of printing efficiently, and it utilizes wide and fast printer and big spool.The fastest and the wideest catalogue printer (catalogue presses) finally also can be similar situation.For the catalogue printer, this part is owing to depend on stiffness coefficient low than in the efficient rotogravure press usually of the paper roll support system of chuck.
In the rotogravure press that has the debatching stability problem, situation is as described below usually.
For 2.45 meters wide printer, the use internal diameter is 76 millimeters a core.Under special circumstances, when a large amount of finished paper of common needs, maximum 2.65 meters wide printer can be that 76 millimeters core is used in combination with internal diameter.Under these operational factors, when remaining paper roll during near the residue paper of common minimum, the safety factor that enters oscillating region will be extremely low.For guaranteeing the remaining paper roll of safe handling, the amount of residue paper must be increased to 15 millimeters from the minimum 3-8 millimeter of fwd.This causes the tremendous economic loss of waste paper form naturally.Web velocity when printing here is about 14 meter per seconds.
When the internal diameter of core was 150 millimeters, the printer width surpassed above-mentioned value (yet internal diameter is that 150 millimeters core also is suitable for above-mentioned printer width) usually.The printer width is generally 3.08 meters, 3.18 meters or 3.28 meters.The print out rate of these machines is same as described above.
A new generation's rotogravure press is also wideer faster than previous, the width of estimation and web velocity be combined as 3.68 meters and 16 meter per seconds, perhaps be 3.08 meters and 20 meter per seconds or 3.18 meters and 25 meter per seconds alternatively.Yet, 1997 early stage before, also do not produce the rotogravure press of this a new generation.
In the wideest printer wideer and paper in reel faster, the internal diameter of core changes to 150 millimeters to solve vibration problem at needs.Up to now, this scheme is very effective.Now, because the operational factor of design-calculated new engine will face as early stage converted machine again is the same problem that is faced before 150 millimeters cores.In other words, dangerous residue paper roll natural vibration scope will be entered into once more.
For this reason, must increase the rigidity of core with this or the sort of method, to avoid increasing the internal diameter of core.The scheme that increases the in-core footpath is considered to produce solution least desirable in the chain.
As mentioned above, the spiral cardboard core is made by narrow ply of board is wound on the axle spirally.Downcutting the cardboard of layer to be spooled from it makes with lap machine.The internal layer of core and outer field selection (but not being always) are usually selected others in addition based on Structural layer.Therefore, internal layer is not that often other layer with core is the same with outer field strength characteristics.These other layers that are usually located between the core skin are called Structural layer, because intensity and quality scale and other character of their character decision core.The final use of core to outer and internal layer (or attached thereto time outer) situation without any specific (special) requirements under, whole core can be with those Structural layer formations above-mentioned.When making cardboard, the target of pursuit is to make its strength characteristics consistent as much as possible.So-called orthogonality is the term that uses in this context, and its theoretical low limit is 1 to be the target of pursuing.Vertical (=machine direction) the intensity of square cardboard and the analog value of the perpendicular machine direction of modulus of elasticity thereof are the same.Yet formerly in the lap machine scheme of technology, cardboard is ratio on the machine direction more strong basically on the direction of vertical machine (wanting strong 1.6-2.7 usually doubly).This is suitable for the modulus of elasticity of cardboard too.For the rigidity of core, the axial stiffness coefficient of core plays a decisive role.Because the structure of screw winding core, (bigger) cardboard stiffness coefficient on the machine direction are circumferencial direction more or less, (less) cardboard stiffness coefficient on the cross machine is axial more or less.
Ratio optimization by the cardboard on the direction that makes cardboard and vertical machine on the machine direction is also adjusted the structure (winding angle) of the core of screw winding, may produce to a certain degree influence to existing situation.Yet by traditional lap machine and traditional screw machine, chance is quite limited, and is not enough to deal with problems.
Rotogravure press is divided into two classes according to its requirement of strength, that is, be divided into than low-intensity rank and higher-strength rank.Modulus of elasticity level than other traditional photography gravure printing presses core of low intensity level is 3300 to 4000MPa.With the traditional material manufacturing but the modulus of elasticity level that belongs to other commercial grade of higher intensity level is 4200 to 4800MPa.By special measure, can surpass these values reluctantly a bit.Finished weight in the rotogravure press and printing width decision which the selection cardboard core from these two intensity ranks.
The raw-material modulus of elasticity level that core is used depends on the raw MAT'L that the ply of board that will use is used, manufacture method and the direction ratio intensive parameter of the cardboard of cross machine ratio (cardboard of machine direction with).On than the low-intensity rank, the modulus of elasticity of the typical paper panel material that the rotogravure press core of suitable quadrature is used is about 6000MPa in machine direction, is about 3000MPa on the direction of vertical machine.For other material of higher intensity level, these analog values are about 6500 to 7500MPa on machine direction, are about 3500 to 4000MPa on the direction of vertical machine.
An object of the present invention is to provide a kind of later-model and Structural layer with improved spiral cardboard core applicability.Another object of the present invention provides a kind of spiral cardboard core, and it comprises at least one this Structural layer and has improved intensity property.Because Structural layer according to the present invention is better than the prior art configurations layer, so that its share in the core wall thickness and the position optimization in the core wall be worth.As mentioned above, the raw-material quality scale of core, thus the quality scale of core is closely-related with the cost of paying for it/receiving.
A further object of the invention is to solve the problem relevant with the helix core of above-mentioned present use, and a kind of spiral cardboard core is provided, and it is satisfied for example by the core requirement of strength of new printer operating parameter setting.Also be applicable to the place of the extra high rigidity of other needs according to the solution of the present invention.
Realize these purposes by scheme according to appended claim.
The test of carrying out according to us, we find, according to the present invention, when the elastic modulus E of the spiral cardboard core Structural layer of cross machine (CD) substantially exceeds 4500MPa, compare original more strong core just for printer of new generation provides enough strong core, and for present printer provides.And the Structural layer elastic modulus E of the machine direction of Structural layer (MD) preferably substantially exceeds 7500MPa.
Novel cardboard core of the present invention can be passed through usefulness, perhaps individually or partly, and according to Structural layer manufacturing of the present invention.The cardboard that this Structural layer is used be by, for example, be called that the operation of the method for pressing dry makes.
Can be called the lap machine manufacturing of the prior art operation of Condebelt by utilization based on the cardboard that press dry.Also can be used for building cardboard core with other appropriate methodology manufacturing and Structural layer that meet according to requirement of strength of the present invention.
Because pressing dry is operation efficiently, so may increase the modulus of elasticity of Structural layer by this method, the modulus of elasticity of the machine direction of above-mentioned low-intensity rank rotogravure press cored structure layer can be brought up to the level of 7500-10000MPa at least, when winding angle was normally used 15-30 °, the modulus of elasticity of very important cross machine can be brought up to the level of 4500-5000MPa.For example, show that modulus of elasticity on the cross machine is the quite high standard that the test results of 4800MPa has been represented this intensity rank.For core according to higher intensity levels of the present invention, their corresponding rotogravure press cores higher or strength level preferably.When having used according to of the present invention and use than good quality and (for example press dry material, by so-called Condebelt method) during the Structural layer made, the modulus of elasticity of machine direction can be brought up to about 10000 to 12000MPa level, and the modulus of elasticity of cross machine can be brought up to about 5000 to 8000MPa level.For example, the Structural layer modulus of elasticity level that shows cross machine is the quite high standard that the test results of 5500MPa and 6500MPa has been represented this intensity rank.
Use the requirement of strength that satisfies the core that will in rotogravure press of new generation, use as the new construction layer of describing among the present invention, except that raw MAT'L, need not change the structure of core with any alternate manner.
Like this, by utilizing the solution of the present invention, the modulus of elasticity than low-intensity rank core that uses can be brought up to 5000 to 6000MPa the level of being at least at present.For example, show that test results that the modulus of elasticity level is at least about 5500MPa represented the quite high standard of this intensity rank.The modulus of elasticity of higher-strength rank core can bring up to the level that is at least about 6000-6500-7000MPa or even higher, it is enough to satisfy the requirement of rotogravure press of new generation.
As finding out, use the requirement of strength that can satisfy above-mentioned rotogravure press according to the elastic mould value of the core of ply of board manufacturing of the present invention well.
Cardboard core according to the present invention is not in the cardboard core of the rotogravure press of new generation that exclusively will be applied to demonstrate.The requirement of strength that they can be applicable to core is higher than typical values Anywhere.For example, when the volume carpet, just need this firm especially core.This carpet core do not resemble for example coil paper, be wound on the carpet supporting-core not on the core, so will bear the long especially stress of time length.The internal diameter of core can be different from the above-mentioned present rotogravure press normally used core diameter 76 and 150 millimeters naturally.
By using the solution of the present invention in making the rotogravure press core, internal diameter is that the field of application of 76 millimeters core can expand to safely than wideer rotogravure press faster at present.Like this, provide answer according to the solution of the present invention for the challenge that brand-new rotogravure press proposes, and improved the economy of existing rotogravure press.
Above-mentioned pressing dry (for example Condebelt) material can also harden with conventional core and close use, with do not need quite high at modulus of elasticity and because or limited availability or cost wish to provide many grades to construct under the situation of saving in material.In these cases, the Structural layer with high elastic modulus is applied in, and for example, intensity is the place of key factor, and the conventional prior art architecture layer with enough abilities is used in other place.
Can improve the rigidity of many grades of screw winding cardboard core by such structure core, make that promptly one of Structural layer at least is that modulus of elasticity according to cross machine of the present invention is at least 4500Mpa's.And particularly advantageous is that the Structural layer modulus of elasticity of machine direction is at least 7500MPa.Best, be at least 1/5 of core wall thickness according to the share of Structural layer of the present invention.Other possible Structural layer can be deferred to prior art.Because cardboard core Structural layer according to the present invention is better than the Structural layer of prior art, so that its share in the core wall thickness and the position optimization in the core wall thereof be worth.As mentioned above, thus the quality scale of the core that the raw-material quality scale of core is finished usually and for its pay/cost of reception is closely-related.Therefore, preferably carry out optimization from core builder's viewpoint and client's viewpoint.
Describe cardboard core of making according to Structural layer of the present invention, with this Structural layer and the method for improving stiffness of paperboard core below with reference to accompanying drawing in detail by example, wherein
Fig. 1 has figured the elastic mould value of the cardboard core of making as the different ply of boards of the function of winding angle α,
Fig. 2 has represented the definition of winding angle α,
Fig. 3 has represented the minimizing in the in-core footpath of calculating with different winding angle α for the cardboard of two kinds of different types.
Appended Fig. 1 is the graphic representation of the elastic mould value of the core made according to ply of board of the present invention as the utilization of the function of winding angle α (average winding angle), this core is, rotogravure press core for example, it is applied in paper-making industry, moviemaking and the textile industry, and the corresponding elastic mould value of other prior art conventional core of described elastic mould value and higher intensity level compares.As mentioned above, when winding angle is in the helix core normally used about 15-35 ° the time, the modulus of elasticity of cross machine has very important influence to the integral, flexible modulus of the helix core finished.The definition list of the ply of board winding angle α relevant with the present invention (average winding angle) is shown among Fig. 2.Winding angle α (average winding angle) is meant the direction of vertical cardboard core axis and the sharp angle between the ply of board edge.In Fig. 1, the dotted line of three points refers to than other common prior art rotogravure press core of low intensity level.Dotted line also refers to other common prior art rotogravure press core of higher intensity level uniformly.In this core, consider that its direction ratio is that the numerical value of direction ratio is very little, be square as far as possible as the cardboard of core material.The dotted line of getting ready refers to the rotogravure press core with Structural layer structure of the present invention, and solid line refers to the another kind of rotogravure press core with Structural layer manufacturing of the present invention.
When rolling up film or yarn on the cardboard core at screw winding, the material that be reeled produces radial compression stress to core, and the internal diameter of core will bear compression, and compression can make the core distortion, that is, the internal diameter of core is reduced.In actual conditions, when core trends towards card thereon the time, will throw into question for the coiling chuck of some pattern.
In practice, when coiling yarn on the cardboard core of screw winding or thread-carrier, it is wet that the coiling environment may remain.This has increased in-core and has directly reduced with core and be stuck in the supercentral trend of reeling.
We find, as seeing from accompanying drawing 3, construct this core by using Structural layer according to the present invention, greatly the trend of lightening core internal diameter minimizing.
Figure 3 shows that for two kinds of different board grades utilizes the internal diameter of the core of different winding angle α (average winding angle) calculating to reduce.Direction ratio with the present normally used cardboard of circles mark is about in test 1.6.The modulus of elasticity of machine direction (MD) is about 7000MPa, and the modulus of elasticity of cross machine (CD) is about 3000MPa.The direction ratio that press dry the cardboard (for example Condebelt cardboard) of manufacturing with the usefulness of triangular marker is about in test 1.8, and the modulus of elasticity of machine direction (MD) is about 11000MPa, and the modulus of elasticity of cross machine (CD) is about 6000MPa.
Claims (18)
1. the Structural layer of a cardboard core is characterized in that, the Structural layer elastic modulus E of cross machine (CD) is apparently higher than 4500MPa.
2. according to the Structural layer described in the claim 1, it is characterized in that the Structural layer elastic modulus E of cross machine (CD) is higher than 4800MPa, preferably is higher than 5000MPa.
3. according to the Structural layer described in the claim 1, it is characterized in that the Structural layer elastic modulus E of cross machine (CD) is higher than 5500MPa, preferably is higher than 6000MPa, preferable is to be higher than 6500MPa.
4. according to each described Structural layer in the aforementioned claim 1 to 3, it is characterized in that the Structural layer elastic modulus E of machine direction (MD) is more apparently higher than 7500MPa.
5. according to each described Structural layer in the aforementioned claim 1 to 3, it is characterized in that the Structural layer elastic modulus E of machine direction (MD) is more apparently higher than 8000MPa.
6. according to each described Structural layer in the aforementioned claim 1 to 5, it is characterized in that Structural layer is with pressing dry method manufacturing.
7. one kind comprises that the elastic modulus E of cardboard core is at least 5000MPa, preferably is higher than 5500MPa as the cardboard core at aforementioned claim Structural layer described in each, and preferable is to be higher than 6000MPa.
8. the cardboard core of a screw winding, it is characterized in that, cardboard core comprises Structural layer, at least the modulus of elasticity of the cross machine (CD) one of in the Structural layer is higher than 4500MPa, preferably be higher than 5000MPa, the modulus of elasticity of machine direction (MD) is at least 7500MPa, preferably is higher than 8000MPa.
9. the cardboard core of the screw winding described in according to Claim 8, it is characterized in that, cardboard core comprises Structural layer, the gross thickness of Structural layer preferably is at least 1/5 of core wall thickness, the Structural layer elastic modulus E of cross machine (CD) is at least 4500MPa, preferably be higher than 5000MPa, the Structural layer elastic modulus E of machine direction (MD) is at least 7800MPa, preferably is higher than 8000MPa.
10. the method for the rigidity of a cardboard core of improving screw winding, it is characterized in that, cardboard core constitutes with Structural layer, at least the modulus of elasticity of the cross machine (CD) one of in the Structural layer is at least 4500MPa, preferably be higher than 5000MPa, the modulus of elasticity of machine direction (MD) is at least 7800MPa, preferably is higher than 8000MPa.
11. method according to the stiffness of paperboard core of the improvement screw winding described in the claim 10, it is characterized in that, cardboard core constitutes with Structural layer, the gross thickness of Structural layer preferably is at least 1/5 of core wall thickness, the Structural layer modulus of elasticity of cross machine (CD) is at least 4500MPa, preferably be higher than 5000MPa, the modulus of elasticity of machine direction (MD) is at least 7800MPa, preferably is higher than 8000MPa.
12., it is characterized in that cardboard core constitutes with Structural layer according to each described cardboard core in the aforementioned claim 7 to 9, the Structural layer modulus of elasticity of machine direction is at least 9000MPa.
13. utilize in the claim 7 to 9 each described cardboard core as thread-carrier.
14. utilize the cardboard core described in the claim 12 as thread-carrier.
15. utilize in the claim 7 to 9 each described cardboard core as film or thin foil with pipe.
16. utilize the cardboard core described in the claim 12 as film or thin foil pipe.
17. utilize the cardboard core described in claim 7 to 9 or the claim 12 as heavy wall paper industry core, its wall thickness H is at least 10 millimeters, internal diameter is greater than 70 millimeters, and the debatching/winding speed when this core uses is at least 200 meters/minute (=3.3 meter per seconds).
18. according to the core described in claim 7 to 9 or the claim 12, it is characterized in that, cardboard core is a heavy wall paper industry core, its wall thickness H is at least 10 millimeters, internal diameter is greater than 70 millimeters, debatching/winding speed when this core uses is at least 200 meters/minute (=3.3 meter per seconds), is positioned at the middle ply of board width of core to be
-be 73 millimeters to 110 millimeters core for internal diameter, be at least 185 millimeters, preferably greater than 210 millimeters, preferable is greater than 230 millimeters,
-be 111 millimeters to 144 millimeters core for internal diameter, be at least 205 millimeters, preferably greater than 210 millimeters, preferable is greater than 230 millimeters,
-be 145 millimeters to 180 millimeters core for internal diameter, be at least 210 millimeters, preferably greater than 250 millimeters, preferable is 350 millimeters to 450 millimeters,
-be 181 millimeters to 310 millimeters core for internal diameter, be at least 220 millimeters, preferably greater than 250 millimeters, preferable is 350 millimeters to 500 millimeters, but
Mostly be most the wide L of maximum layer of each core of certain width
Max, L wherein
Max=(π) * (core diameter of specified point).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI970646A FI970646A (en) | 1997-02-14 | 1997-02-14 | Construction strip for cardboard sleeve, cardboard sleeve made therefrom and method for improving the stiffness of a cardboard sleeve |
| FIU970081 | 1997-02-14 | ||
| FI970081U FI3004U1 (en) | 1997-02-14 | 1997-02-14 | Cardboard core construction tape and cardboard core made of it |
| FI970646 | 1997-02-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1247501A true CN1247501A (en) | 2000-03-15 |
| CN1135162C CN1135162C (en) | 2004-01-21 |
Family
ID=26160298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB98802523XA Expired - Fee Related CN1135162C (en) | 1997-02-14 | 1998-01-23 | Structural ply of paperboard core, paperboard core made thereof, and method of improving stiffness of paperboard core |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US6962736B1 (en) |
| EP (1) | EP1007343B1 (en) |
| JP (1) | JP2001515444A (en) |
| KR (1) | KR20000071104A (en) |
| CN (1) | CN1135162C (en) |
| AT (1) | ATE290462T1 (en) |
| AU (1) | AU5766998A (en) |
| BR (1) | BR9807684A (en) |
| CA (1) | CA2280947C (en) |
| DE (1) | DE69829294T2 (en) |
| ID (1) | ID22844A (en) |
| MY (1) | MY132797A (en) |
| WO (1) | WO1998035825A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1519657B (en) * | 2003-02-07 | 2010-06-02 | 富士胶片株式会社 | Carrier for image recording material, its preparation method and image recording material |
| CN109476439A (en) * | 2016-08-18 | 2019-03-15 | 索诺克发展有限公司 | Core for coiled elastic body yarn |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI980145A (en) | 1998-01-23 | 1999-07-24 | Ahlstroem Alcore Oy | Process for making paper industry cores which are made of cardboard and have an improved chuck strength and paper industry sleeve which is made of cardboard and constructed according to this process |
| US6669814B2 (en) * | 2002-03-08 | 2003-12-30 | Rock-Tenn Company | Multi-ply paperboard prepared from recycled materials and methods of manufacturing same |
| DE202004005645U1 (en) * | 2004-04-08 | 2004-06-09 | Koenig & Bauer Ag | Rolls of material and offset rotary press |
| US20070131368A1 (en) * | 2005-12-14 | 2007-06-14 | Sonoco Development, Inc. | Paperboard with discrete densified regions, process for making same, and laminate incorporating same |
| US7842362B2 (en) | 2006-02-17 | 2010-11-30 | Sonoco Development, Inc. | Water-resistant wound paperboard tube |
| US7712487B2 (en) * | 2006-09-13 | 2010-05-11 | Sonoco Development, Inc. | Spirally wound tube with voids and method for manufacturing the same |
| DE102007045482A1 (en) * | 2007-09-21 | 2009-04-16 | Corenso Elfes Gmbh & Co. Kg | Method for producing a sleeve using paper and / or cardboard materials |
| DE102011101842A1 (en) * | 2011-05-17 | 2012-11-22 | Robert Bosch Gmbh | Method of controlling web tension in a web-processing machine |
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| US4675079A (en) | 1982-12-14 | 1987-06-23 | Webster David R | Multi-nip suction press with a four roller closed train |
| US4738752A (en) | 1986-08-12 | 1988-04-19 | Beloit Corporation | Heated extended nip press apparatus |
| US4729175A (en) * | 1987-03-02 | 1988-03-08 | Container Corporation Of America | Ultrasonic press drying of paperboard |
| US5167994A (en) | 1991-04-19 | 1992-12-01 | Boise Cascade Corporation | Reusable core for paper rolls |
| US5505395A (en) * | 1993-06-04 | 1996-04-09 | Sonoco Products Company | Multi-grade paperboard winding cores for yarns and films having enhanced resistance to inside diameter reduction |
| US5393582A (en) * | 1993-06-04 | 1995-02-28 | Sonoco Products Company | Enhanced crush strength construction multi-grade paperboard tubes |
| US5472154A (en) | 1993-07-02 | 1995-12-05 | Sonoco Products Company | High spiral angle winding cores |
-
1998
- 1998-01-23 DE DE69829294T patent/DE69829294T2/en not_active Expired - Lifetime
- 1998-01-23 EP EP98901357A patent/EP1007343B1/en not_active Expired - Lifetime
- 1998-01-23 WO PCT/FI1998/000061 patent/WO1998035825A1/en active IP Right Grant
- 1998-01-23 BR BR9807684A patent/BR9807684A/en not_active IP Right Cessation
- 1998-01-23 JP JP53538498A patent/JP2001515444A/en not_active Ceased
- 1998-01-23 AT AT98901357T patent/ATE290462T1/en active
- 1998-01-23 ID IDW991003D patent/ID22844A/en unknown
- 1998-01-23 AU AU57669/98A patent/AU5766998A/en not_active Abandoned
- 1998-01-23 CA CA002280947A patent/CA2280947C/en not_active Expired - Fee Related
- 1998-01-23 US US09/367,108 patent/US6962736B1/en not_active Expired - Fee Related
- 1998-01-23 CN CNB98802523XA patent/CN1135162C/en not_active Expired - Fee Related
- 1998-01-23 KR KR1019997007392A patent/KR20000071104A/en active IP Right Grant
- 1998-02-13 MY MYPI98000619A patent/MY132797A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1519657B (en) * | 2003-02-07 | 2010-06-02 | 富士胶片株式会社 | Carrier for image recording material, its preparation method and image recording material |
| CN109476439A (en) * | 2016-08-18 | 2019-03-15 | 索诺克发展有限公司 | Core for coiled elastic body yarn |
| CN109476439B (en) * | 2016-08-18 | 2020-06-12 | 索诺克发展有限公司 | Core for winding elastomeric yarns |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2280947C (en) | 2004-05-11 |
| EP1007343A1 (en) | 2000-06-14 |
| WO1998035825A1 (en) | 1998-08-20 |
| DE69829294T2 (en) | 2006-04-13 |
| KR20000071104A (en) | 2000-11-25 |
| DE69829294D1 (en) | 2005-04-14 |
| ID22844A (en) | 1999-12-09 |
| US6962736B1 (en) | 2005-11-08 |
| CN1135162C (en) | 2004-01-21 |
| MY132797A (en) | 2007-10-31 |
| AU5766998A (en) | 1998-09-08 |
| EP1007343B1 (en) | 2005-03-09 |
| JP2001515444A (en) | 2001-09-18 |
| CA2280947A1 (en) | 1998-08-20 |
| BR9807684A (en) | 2000-03-21 |
| ATE290462T1 (en) | 2005-03-15 |
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